No, DAT scans do not quantify Parkinson's disease. It would confirm the Movement Disorder's suggestion that there is dopamine loss. Several other problems also cause loss of Dopamine pproducing neurons. Dopa responsive dystonia, Mulriple system atrophey, and brain damage from a hard hit to the back of the head. Possibly even envirenmental exposure to a toxin. Parkinson's disease is basically a set of symptoms noticed by a Dr. James Parkinson. Any disease or brain dysfunction that causes death of Dopamine neurons is classified under the name of Parkinson's disease. It takes a lifetime of study by movement disorder specialists to pin it down more specifically, and maybe never. I wish you the best and lots of patience to accept the thengs you can not change. Your job title may change, (full time Dad, expert at DBS loss, whatever hobbies you have could be taught at a public school afterschool program. How you choose to act is up to you. The disease will not change who you are, only how you choose to spend your time as you cope with this new challenge.

Dianna